Form with list, button
/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa
Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace Modeless
{
/// <summary>
/// Summary description for MainForm.
/// </summary>
public class MainFormDemo : System.Windows.Forms.Form
{
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
AddItemForm frmAdd;
public MainFormDemo()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
frmAdd = new AddItemForm (this);
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.listBox1 = new System.Windows.Forms.ListBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// listBox1
//
this.listBox1.Location = new System.Drawing.Point(42, 16);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(208, 199);
this.listBox1.TabIndex = 0;
//
// button1
//
this.button1.Location = new System.Drawing.Point(17, 240);
this.button1.Name = "button1";
this.button1.TabIndex = 1;
this.button1.Text = "Add Item";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(109, 240);
this.button2.Name = "button2";
this.button2.TabIndex = 2;
this.button2.Text = "Delete Item";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.button3.Location = new System.Drawing.Point(201, 240);
this.button3.Name = "button3";
this.button3.TabIndex = 3;
this.button3.Text = "Close";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// MainForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.CancelButton = this.button3;
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button3,
this.button2,
this.button1,
this.listBox1});
this.Name = "MainForm";
this.Text = "MainForm";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new MainFormDemo());
}
private void button1_Click(object sender, System.EventArgs e)
{
if (frmAdd.IsDisposed == true)
frmAdd = new AddItemForm (this);
frmAdd.Show ();
}
private void button2_Click(object sender, System.EventArgs e)
{
if (listBox1.SelectedIndex < 0)
return;
object obj = listBox1.Items[listBox1.SelectedIndex];
listBox1.Items.Remove (obj);
}
private void button3_Click(object sender, System.EventArgs e)
{
Application.Exit ();
}
public string AddItemToList (string strAdd)
{
if (strAdd == "")
return ("");
if (listBox1.FindString (strAdd, -1) < 0)
{
listBox1.Items.Add (strAdd);
return ("");
}
MessageBox.Show ("\"" + strAdd + "\" is already in the list box", "Duplicate");
return (strAdd);
}
}
/// <summary>
/// Summary description for AddItemForm.
/// </summary>
public class AddItemForm : System.Windows.Forms.Form
{
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
MainFormDemo parent;
public AddItemForm(MainFormDemo parent)
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
this.parent = parent;
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(28, 8);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(224, 20);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
//
// button1
//
this.button1.Location = new System.Drawing.Point(40, 48);
this.button1.Name = "button1";
this.button1.TabIndex = 2;
this.button1.Text = "Add";
this.button1.Click += new System.EventHandler(this.button1_Click_1);
//
// button2
//
this.button2.Location = new System.Drawing.Point(184, 48);
this.button2.Name = "button2";
this.button2.TabIndex = 3;
this.button2.Text = "Close";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// AddItemForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(280, 77);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button2,
this.button1,
this.textBox1});
this.Name = "AddItemForm";
this.Text = "AddItem";
this.ResumeLayout(false);
}
#endregion
private void button1_Click_1(object sender, System.EventArgs e)
{
textBox1.Text = parent.AddItemToList (textBox1.Text);
// textBox1.Text = "";
}
private void button2_Click(object sender, System.EventArgs e)
{
this.Dispose ();
this.Close ();
}
}
}
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